#toggle:checked ~ nav {
    margin-left:  -240px;
    -webkit-transition : 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) all;
    -moz-transition : 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) all;
}

.clickshow:hover{
    cursor: pointer;
}